Employee Benefit Plans Summary of Pension Plan and Postretirement Plan Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Pension Plan [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Interest cost | $ 728 | $ 767 | $ 1,457 | $ 1,535 |
| Expected return on plan assets | (1,041) | (978) | (2,083) | (1,956) |
| Net periodic postretirement benefit | (313) | (211) | (626) | (421) |
| Other Postretirement Benefits Plan [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Interest cost | 7 | 8 | 14 | 17 |
| Net accretion and deferral | (85) | (135) | (222) | (271) |
| Net periodic postretirement benefit | $ (78) | $ (127) | $ (208) | $ (254) |
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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